Cold temperature controller 220 Watts The image shows how to connect and set up the XH-W3002 digital temperature controller with 220V AC voltage to turn electrical devices (such as heaters, lamps, or fans) on and off based on the sensor reading and the desired temperature level.🔌 Electrical connection method (220V voltage) The device consists of four main wires divided into two input terminals and two output terminals: Power supply terminals (220V power supply): The black wire connects to the neutral line (N). The red wire connects to the live line (L). Load or direct output terminals (Direct output 220V): The black wire connects to the neutral line (N) going to the device to be operated (e.g., lamp). The yellow wire connects to the live line (L) going to the same device. Programming code and settings menu (Menu) By pressing the SET button once, you can navigate between the device's internal menus using the up and down arrows: Code Function and Description Default Range P0 Start Temperature: The temperature at which the output starts working and supplying power. -50 to 110 °C P1 Stop Temperature: The temperature at which the output disconnects and the connected device stops working. -50 to 110 °C P2 Temperature Calibration: To correct the sensor reading if it differs from the actual temperature. -10 to 10 °C P3 Delay Start: Set a delay time in minutes before starting the output to protect compressors (air conditioners/coolers). 0 to 10 minutes